Terminal for electrical appliances



May 8, 1923 1,454,359

c H. WERENSKIOLD TERMINAL FOR ELECTRICAL APPLIANCES Filed Nov. 4, 1919 gmz l' plugs,

CARL HENBIK WERENSKIOLD, .OF BROOKLYN, NEW YO TERMINAL FOR ELECTRICAL APPLIANCE.

Application filed November 4, 1919. Serial Ito. 835,749.

specification.

The present invention relates to improvements in terminals for electrical appliances, and has for an object to provide a device of this character which is of simple and inexpensive manufacture and which will be thoroughly eflicient in use.

More particularly I propose to provide a terminal suitable for batteries, spark etc., to which the conductor may be quickly attached by merely inserting in a straight condition, the necessitv of first bending or forming a loop in the wire being done away with, and which will securely hold the conductor against being pulled loose, the connection between the conductor and the terminal being in the nature of an interlocking. relation between them.

Another object isto provide a connection which will not become loosened or affected by vibration and shocks, and in which relative movement of the different parts will be prevented. A still further object is to provide a reliable and positive contact at a plurality of points between the conductor and the terminal. 7

With these and other objects in view, embodiments of my invention are shown in the accompanying drawings, and these embodiments will be hereinafter more fully described with reference thereto, and the invention will be finally pointed out in the claims.

In the accompanying drawings,

Fig. 1 is, a perspective view of one embodiment of my improved terminal;-

Fig. 2 is a vertical sectional view thereof andshowing a conductor held therein;

Fig. 3 is an elevation of the central supporting pillar .forming part of the device Fig. 4 is a lowerend view;

Fig. 5 is an elevation of the nut;

Fig. 6 is a vertical sectional view thereof;

Fig. 7 is a bottom plan view;

Fig. 8 is a plan view of the base plate,

Fig. 9 is a sectional view along the line 9-.9 of Fig. 8;

Fig. 10 is an edge view thereof;

upon the conductor, ment with the base bent by the pressure of the gaging the perforation 23 Fig. 11 is an elevation partly in section and showing a modified form of construction; and

Fig. 12 is a plan view of the base plate employed in the form of construction shown in Fig. 11.

Similar reference characters indicate corresponding parts throughout the several fi ures of the drawings.

ferring to the drawings, and more particularly to Figs. 1 to 10thereof. the embodiment of my invention showntherein comprises a central supporting pillar .orv post 20, screw threaded, and provided at its er end with an enlarged head 21. The pillar it will be understood, may be screwed or otherwise secured in place uponlthe electrical appliance to which the terminal is to be attached. A cylindrical perforation 23' extends transversely through the pillar substantially centrally thereof, and is of sumcient diametertoreceive an electric conductor. p

A nut 24 having a knurled outer surface 25 is screwed upon the pillar and is provided in its under side with an annular pocket or recess 26, having a substantially horizontal upper surface, the head 21 of the pillar adapted to retain the nut upon the same to prevent its accidental loss.

Beneath the nut there is screwed upon the pillar a circular base plate 27 of greater diameter than the nut 24: and provided at diametrically opposite sides with upstanding pairs of spaced lugs 28 and 29 forming diametrically opposed guide slots 30 and 31 in which the eonductor 32 is adapted to be seated, these slots being preferably. disposed in the same vertical plane as the aperture 23..

In order to connect the conductor to the terminal, the same is passed in its straight condition through the aperture 23, the nut being raised so that its lower surface is above the aperture as indicated in Fig. 1,

the conductor passing at each side of the aperture being disposed above the slots 30 and 31. The nut is thereupon screwed down binding it into engagp late and pocketin t e same at each side in the slots 30 an 31, the conductor intermediate'the slots being.

nut, into humpform, the hump comprising the ortion enand. t e portions contiguous thereto and flip. downwardly and at each side of the perforation in the space provided by the annular pocket 26, the conductor then assing at each side between the lower sur ace of the nut and the base late through the slots 30 and 31. The depth of the pocket 26and the distance between the perforation 23 and the base plate-being equal, the conductor is clamped within the perforation by the engagement of the upper surface of the pocket with the conductor at each side of the perforation as .at a and b (F ig. 2) and at the same time is clamped against the base plate by the pressure of the lower surface of the nut as at c and d.

The conductor is held against displacement relatively to the base plate in a plane parallel therewith by engagement in the slots 30 and 31 so that lateral strains upon the conductor will ,not tend to loosen the frictional engagement of the nut after it has been tightened, nor will pulling upon the conductor avail to loosen its connectlon with the terminal.

In Figs. 11 and 12, l have shown a modilied form of construction in which the base plate 27 is held against rotation relatively to the post, and also against longitudinal movement, the post being rovided at its lower portion with opposed agttened sides 33 and 34, forming shoulders 3 land36, the aperture of'the base being of corresponding cross section so that when engaged with the post, rotation is prevented, the base bein eld tightly against the shoulders 35 an 36 by a nut 38 threaded upon the lower end of the post and engaging the under side of the base.

Attacent of the conductor to the terminal is extremely simple and etlicient, and to remove the conductor it isonly necessary to turn up the nut, the conductor being readily straightened and withdrawn.

l have illustrated and described preferred and satisfactory embodiments of my invention, but it is obvious that changes may be made therein within the spirit and scope thereof as defined in the appended claims.

ll claim:

vIt. A binding post comprising a screw threaded pillar provided at a point between its ends with a transverse wire receiving opening, a base member disposedon the its ends with a transverse wire pillar between the opening thereof and the end remote from the head and having oppositely disposed guides adapted for receiving a conducting wire, a nut screwed on the pillar at the opposite side of the opening from the base, the screw threaded opening of the nut terminating in an enlarged circular recess in the face of the nut adjacent to the base, the recessed portion of the nut being of a length substantially equal to the distance between the opening and the base and having its inner surface spaced from the pillar by a distance considerably greater than the diameter of the opening, whereby the nut on being turned in one direction is adapted to form bends in portions of a wire extending through the opening of the pillar and through the guides and operates to clamp the wire between the lower rim ot the nut and-the base and between the inner edge of the recess of the nut and the lower edges of the opening. v

2. A binding post comprisinga screw threaded pillar provided at a point between receiving opening, a base member disposed on the pillar between the opening thereof and the end remote from the head and having oppositely disposed pairs of upright lugs arranged in a common pillar longitudinally of the pillar and being ollset from said opening in planes at right angles to the pillar, said lugs being adapted to receive between them a conducting wire, a nut screwed on the pillar between the head thereof and the opening, the screw threaded opening of the nut terminating in an enlarged circular recess, in the face of the nut adjacent to the base, the inner surface of the recessed portion of the nut being spaced from said pillar by a distance greater than that between the lower rim of the nut and plane with the opening of the the base whereby the nut on being turned in one direction is adapted to form bends in portions of a wire extending through the opening of the pillar and through the spaces between the lugs of the base and operates to clamp the wire between the lower end surface of the nut and the base.

In testimony that I claim the foregoing as my invention, it have signed my name hereunder.

EARL HENRIEK W'JERENSKIQLD.

lltItD 

